Trifluoroacetic acid → 5-{4-[4-(3,4-Difluoro-phenyl)-6-trifluoromethyl-pyrimidin-2-yl]-pyridin-2-yl}-thiophene-2-sulfonic acid amide

HRID 1989716Notes

Reaction equation

HRID 1989716 reaction equation
C([NH:5][S:6]([C:9]1[S:10][C:11]([C:14]2[CH:19]=[C:18]([C:20]3[N:25]=[C:24]([C:26]4[CH:31]=[CH:30][C:29]([F:32])=[C:28]([F:33])[CH:27]=4)[CH:23]=[C:22]([C:34]([F:37])([F:36])[F:35])[N:21]=3)[CH:17]=[CH:16][N:15]=2)=[CH:12][CH:13]=1)(=[O:8])=[O:7])(C)(C)C.C(O)(C(F)(F)F)=O>ClCCl>[F:33][C:28]1[CH:27]=[C:26]([C:24]2[CH:23]=[C:22]([C:34]([F:35])([F:36])[F:37])[N:21]=[C:20]([C:18]3[CH:17]=[CH:16][N:15]=[C:14]([C:11]4[S:10][C:9]([S:6]([NH2:5])(=[O:7])=[O:8])=[CH:13][CH:12]=4)[CH:19]=3)[N:25]=2)[CH:31]=[CH:30][C:29]=1[F:32]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 602094845-{4-[4-(3,4-Difluoro-phenyl)-6-trifluoromethyl-pyrimidin-2-yl]-pyridin-2-yl}-thiophene-2-sulfonic acid tert-butyl amide

Product 1

HCID 574690825-{4-[4-(3,4-Difluoro-phenyl)-6-trifluoromethyl-pyrimidin-2-yl]-pyridin-2-yl}-thiophene-2-sulfonic acid amideYield 30.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a cooled and stirred solution of 5-{4-[4-(3,4-difluoro-phenyl)-6-trifluoromethyl-pyrimidin-2-yl]-pyridin-2-yl}-thiophene-2-sulfonic acid tert-butyl amide (0.29 g) in dichloromethane (4 ml) was added TFA (4 ml) and the reaction mixture was allowed to stir at room temperature for 15 h. The mixture was evaporated to dryness, poured into 2N NaHCO3 solution (20 ml) and extracted with ethyl acetate (3×50 ml). The combined organic layers were washed with brine (50 ml), dried (MgSO4) and evaporated. Further purification crystallization (ethyl acetate/heptane) yielded the title compound as a white solid (0.08 g, 24%). MS (ISP) 499.1 [(M+H)+]; mp 281° C.

Workup

  1. temperatureTo a cooled
  2. customThe mixture was evaporated to dryness
  3. additionpoured into 2N NaHCO3 solution (20 ml)
  4. extractionextracted with ethyl acetate (3×50 ml)
  5. washThe combined organic layers were washed with brine (50 ml)
  6. dry with materialdried (MgSO4)
  7. customevaporated
  8. customFurther purification crystallization (ethyl acetate/heptane)

Sources & evidence

ORD record
ord-069b8e84a67b44d990e3d38af989e5b1
Source dataset
uspto-grants-2010_01
Patent number
US07642264B2

Reaction notes

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